Number of partitions p of n such that min(p) <= (number of parts of p) < max(p).

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =2a(5) =3a(6) =4a(7) =7a(8) =10a(9) =15a(10) =21a(11) =29a(12) =39a(13) =54a(14) =71a(15) =95a(16) =124a(17) =163a(18) =209a(19) =271a(20) =344a(21) =440a(22) =554a(23) =700a(24) =874a(25) =1095a(26) =1357a(27) =1685a(28) =2076a(29) =2559